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Question 76 - DBS-C01 discussion

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A Database Specialist is working with a company to launch a new website built on Amazon Aurora with several Aurora Replicas. This new website will replace an on-premises website connected to a legacy relational database. Due to stability issues in the legacy database, the company would like to test the resiliency of Aurora.

Which action can the Database Specialist take to test the resiliency of the Aurora DB cluster?

A.
Stop the DB cluster and analyze how the website responds
Answers
A.
Stop the DB cluster and analyze how the website responds
B.
Use Aurora fault injection to crash the master DB instance
Answers
B.
Use Aurora fault injection to crash the master DB instance
C.
Remove the DB cluster endpoint to simulate a master DB instance failure
Answers
C.
Remove the DB cluster endpoint to simulate a master DB instance failure
D.
Use Aurora Backtrack to crash the DB cluster
Answers
D.
Use Aurora Backtrack to crash the DB cluster
Suggested answer: B

Explanation:


https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Managing.FaultInjectionQueries.html

"You can test the fault tolerance of your Amazon Aurora DB cluster by using fault injection queries.

Fault injection queries are issued as SQL commands to an Amazon Aurora instance and they enable you to schedule a simulated occurrence of one of the following events: A crash of a writer or reader DB instance A failure of an Aurora Replica A disk failure Disk congestion When a fault injection query specifies a crash, it forces a crash of the Aurora DB instance. The other fault injection queries result in simulations of failure events, but don't cause the event to occur.

When you submit a fault injection query, you also specify an amount of time for the failure event simulation to occur for."

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asked 16/09/2024
Vagner Nicodemo
33 questions
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